/// <summary>
/// Takes a subway line item and adds it to the dictionary. If the item exists, it adds it to that entries sorted set. If the entry does not, it creates
/// that entry in the dictionary.
/// </summary>
/// <param name="item"><see cref="SubwayLine"/></param>
private void UpdateTimetable(SubwayLine item)
{
var newItem = new SubwayInfo
{
LineId = item.Name,
LineInfo = item,
DateForRecord = DateTime.UtcNow
};
if (subwayTimes.ContainsKey(item.Name))
{
var set = subwayTimes[item.Name];
set.Add(newItem);
return;
}
subwayTimes.Add(item.Name, new SortedSet <SubwayInfo> {
newItem
});
}
/// <summary>
/// Returns each MTA Subway lines and their status. The text of the alert is used to determine the status per line
/// </summary>
/// <returns>List of lines and associated status</returns>
public async Task <List <SubwayLine> > GetLinesAsync()
{
var service = await _repo.GetServiceAsync();
var result = new List <SubwayLine>();
foreach (var name in SubwayNames)
{
var line = service.Subway.OrderBy(s => s.Name).FirstOrDefault(s => s.Name.Contains(name));
var subwayLine = new SubwayLine
{
Name = name,
Status = null == line ?
ServiceStatus.UNKNOWN : line.Text.Contains(string.Format("[{0}]", name)) ?
line.Status : ServiceStatus.GOOD_SERVICE
};
result.Add(subwayLine);
}
return(result);
}
//加载文本格式地图
private void LoadTxtMap(string txtMapPath)
{
try
{
using (StreamReader sr = new StreamReader(txtMapPath))
{
string line;
while (true)
{
SubwayLine subwayLine = new SubwayLine();
subwayLine.IsCircle = false;
subwayLine.InLineSubwayStationsNames = new List <string>();
string[] stationsInfo;
//获取地铁线路名
if ((line = sr.ReadLine()) != null)
{
Match lineNameMatch = Regex.Match(line, @"^@([0-9a-zA-Z\u4E00-\u9FA5]+)");
if (lineNameMatch.Success)
{
subwayLine.IsCircle = true;
subwayLine.Name = lineNameMatch.Groups[1].Value;
}
else if (Regex.Match(line, @"^([0-9a-zA-Z\u4E00-\u9FA5]+)").Success)
{
subwayLine.Name = line;
}
else
{
throw new Exception("地铁线路名格式有误");
}
}
else
{
return;
}
//获取此地铁线上所有地铁站名与地铁站所在地铁线路名
line = sr.ReadLine();
stationsInfo = Regex.Split(line, " ");
foreach (string stationInfo in stationsInfo)
{
//添加地铁站点名
Match stationNameMatch = Regex.Match(stationInfo, @"^[0-9a-zA-Z\u4E00-\u9FA5]+");
if (!stationNameMatch.Success)
{
throw new Exception("地铁站名格式有误");
}
subwayLine.InLineSubwayStationsNames.Add(stationNameMatch.Value);
//若地铁站为记录于系统中，则添加到stations中
if (!stations.Contains(stationNameMatch.Value))
{
Station station = new Station();
station.PlacedSubwayLineName = new List <string>();
station.Name = stationNameMatch.Value;
//添加所在地铁线路名
station.PlacedSubwayLineName.Add(subwayLine.Name);
MatchCollection subwayLineMatchCollection = Regex.Matches(stationInfo, @"\[([0-9a-zA-Z\u4E00-\u9FA5]+)\]");
foreach (Match m in subwayLineMatchCollection)
{
if (!m.Success)
{
throw new Exception("地铁站名格式有误");
}
station.IsTransferStation = true;
station.PlacedSubwayLineName.Add(m.Groups[1].Value);
}
stations.Add(station.Name, station);
}
}
subwayLines.Add(subwayLine.Name, subwayLine);
}
}
}
catch (Exception e)
{
Console.WriteLine("文件无法读取");
Console.WriteLine(e.Message);
System.Environment.Exit(0);
}
return;
}
//获取两站之间的所有站点（同一线路上），不存在站点时返回null
private List <string> getBetweenStations(string station1Name, string station2Name)
{
int station1SubwayLineIndex, station2SubwayLineIndex;
string stationLinesName = GetStationsLineNames(station1Name, station2Name)[0];
SubwayLine subwayLine = (SubwayLine)map.SubwayLines[stationLinesName];
List <string> stationsInSubwauLine = new List <string>();
List <string> outerStationsInSubwauLine = new List <string>();
station1SubwayLineIndex = subwayLine.InLineSubwayStationsNames.FindIndex((string stationName) => stationName == station1Name);
station2SubwayLineIndex = subwayLine.InLineSubwayStationsNames.FindIndex((string stationName) => stationName == station2Name);
if (station1SubwayLineIndex + 1 < station2SubwayLineIndex)
{
for (int i = station1SubwayLineIndex + 1; i < station2SubwayLineIndex; i++)
{
stationsInSubwauLine.Add(subwayLine.InLineSubwayStationsNames[i]);
}
}
else if (station1SubwayLineIndex > station2SubwayLineIndex + 1)
{
for (int i = station1SubwayLineIndex - 1; i > station2SubwayLineIndex; i--)
{
stationsInSubwauLine.Add(subwayLine.InLineSubwayStationsNames[i]);
}
}
//考虑到回环的地铁线路，需要另一方向的路线记录
if (subwayLine.IsCircle)
{
if (station1SubwayLineIndex < station2SubwayLineIndex && station1SubwayLineIndex + subwayLine.InLineSubwayStationsNames.Count - station2SubwayLineIndex > 0)
{
for (int i = station1SubwayLineIndex - 1; i >= 0; i--)
{
outerStationsInSubwauLine.Add(subwayLine.InLineSubwayStationsNames[i]);
}
for (int i = subwayLine.InLineSubwayStationsNames.Count - 1; i > station2SubwayLineIndex; i--)
{
outerStationsInSubwauLine.Add(subwayLine.InLineSubwayStationsNames[i]);
}
}
else if (station1SubwayLineIndex > station2SubwayLineIndex && station2SubwayLineIndex + subwayLine.InLineSubwayStationsNames.Count - station1SubwayLineIndex > 0)
{
for (int i = station1SubwayLineIndex + 1; i < subwayLine.InLineSubwayStationsNames.Count; i++)
{
outerStationsInSubwauLine.Add(subwayLine.InLineSubwayStationsNames[i]);
}
for (int i = 0; i < station2SubwayLineIndex; i++)
{
outerStationsInSubwauLine.Add(subwayLine.InLineSubwayStationsNames[i]);
}
}
}
//返回路径最小的间隔站点信息
if (stationsInSubwauLine.Count == 0 && outerStationsInSubwauLine.Count == 0)
{
return(null);
}
else if (stationsInSubwauLine.Count != 0 && outerStationsInSubwauLine.Count == 0)
{
return(stationsInSubwauLine);
}
else if (stationsInSubwauLine.Count != 0 && outerStationsInSubwauLine.Count == 0)
{
return(outerStationsInSubwauLine);
}
else
{
if (stationsInSubwauLine.Count <= outerStationsInSubwauLine.Count)
{
return(stationsInSubwauLine);
}
else
{
return(outerStationsInSubwauLine);
}
}
}
